Calculating-machine.



D: E. 'ELT. CALCULATING MACHINE.

APPLIOATION FILED NOV.28,1911.

Patented June 4, 1912.

8 SHEETS-SHBET 1.

D. E. FELT. OALCULATING MAQINE. APPLICATION FILED NOV.28,191l.

Pavened June 4, 912.

8 SHEETS-SHEET 2.

D. E. FELT. CALCULATING MACHINE. APPLIOATION FILED Nov. 28, 1911.

Patented June 4, 1912.

8 SHEETB-SHEET 3.

& us

D. E. FELT. CALUULATING MCHINE. APPLIOATION FILED Nov, 28, 1911.

1,028,344;. -Patented June 4; 1912. r

8 SHEETS-SHBET 4.

D. E. FELT. 'CALCU'LATING MAQHINE.

, PPLIOATION FILED Nov. 28, 1911. 1,028,344. -Patented June 4, 1912 8 SHEBTS-SHEET 5.

T M /Z liga D. B. FELT. CALCULATING MACHINE.

APPLIOATION FILED NOV. 28,1911, r 1,028,344:. Patented June 4, 1912.

8 SHEETS-SHEET 8.

D. 8. FELT. GALCULATIN'G MAGHINB.

APPLICATION IILED NOV.2B. 1911.

1,028,344;-. atented June 4, 1912.

8 SHEETS-SHBET 7.

D. E. FELT. CALCULATING MACHINE. APPLIOATION rILBD Nov. 28, .1911.

Patented June 4, 1912.

8 BHEETS-SHEET 8.

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Be it known that Dom E. '13811 of the United S; cago, in the County n? Cool; ::a (T State Of Illinois, have invented 21 new um! Useful Fmprovement :in (1211uulfiiing-Mzwb&2108 of Whifih the following 21 fipccific: nn.

My nvention I'H'OS io &filuulzxiug um- Chines pmvidcd wfl] koybzmrd ncuhfimsm, mboying a ph mliy of: keys of (hlf-;TOM orders Whose rxmnigndnton deermnes 'he amonnts added, and particularly te the nufltiplc Order key drivun duploxing cacuhting mara, citiiva, rusnlm m Chlmac-hm; &such :18 Um WON known cmpony &ter sei fm'fl: in my pfim' United Sams atents, NOS. 762 520 and (SQJDQ. of June 29, 19%; '767107 Of jm "n nst 19%., NO. 980528 af Juno 7, 1910 379 950 of zw' 2? 1911 and 996009 of June EG, 1911.

The invm'ion has fm' Objec the providing of such a calcuhingz nmchino WUI mprm'ed means or normfifly locking the keys of such IOCIC continning in fulli force except When the keya are s ven Complete stwkes :and durh ung fi mu-01:05

&he following su COJTMCC si-c ms fimi' "nh complfiste key stmko (u) 11018 (TZULJQ :'1133 release of 'he ock and consequenfly the O atol nmkng .sm-h ncomplete s'oke'wl prevonh d from 'pz'oceeding with his compw hitinn whimt first COTI'GCWO :h

Another Object has been One Of ;518 keys.

F. View of Pie partial stl'oke Hide eevaon of the machina ;a sz: ,:t' nz1l view shmving One lra fm' :n'rusiing the ficcumx'sh Fly. shows n cam 1 ann frum the czmcming mechfinsm. M, (m0 of flug ncvunlulntdr Wheels. F secion similar h) Fi g. l parts umfivd fm the Figs. 21 views (f viccs,

En &mid dmwing '20 11101131 01' register: 'wbm drvcn b- 2821121 1 3 1 wnce 2 111811 &mix

21. The

Wlfll 501110 saka 01 fletir; M ;11141 22 are munni and fnSt upon ins! the Column nc 26 Course "CC Mumm.

vided with some features of Patents 982416 and 982417 as will be understood from the description below. The column actuators are provided with lifting springs 33 as in the usual construction.

The accumulator provided in each order of the machine rotates in one direction only as will be understood from what is above written, and is locked normally against movement in this direction by the detent 37 hereinafter described except when that detent is withdrawn by reason of a full stroke given One of the keys in the order to which the accumulator belongs. The accumulator embodies a lantern portion the pins of Which are shown at 34 in Fig. 2, and these pins engage the back ,stop 35 for -preventing back- Ward rotation, and they also engage the carrying detent 36 whereby the accumulator is rotated at proper times in Carrying, Figs. 2 and 20. The lantern pins further engage said detent 37 whose normal position is a' looking One between the pins but s withdrawn from that position at the conclusion of each full downward stroke received from any of the keys. The detent 37 is pivoted at 38 upon the bell Crank Carrying member 37, a spring 39 at its foot tending to keep it away from the accumulator, and a pin 39 projectlng from the member 37 into the .opening 39 limits its movements, but it is Controlled as to position by a catch 40 which is one of the novel features O' the mech .foot exte nding toward the detent 37 and the detent 37 is provided with a lip or tongue 44 projecting toward the Catch. The lip 43 and tongue 44 are adapted to act as guide's to eaeh other when they come in contact, allowing them to move one upon the other without ell'ecting any arrest of one by the other, exeepting as Specified below and they.

are clearly sh own at- Fig. 5, and when at rest the Catch and detent are in the relative posi tions .shown at l 'ig. it, with the' detent entered between the pins of the accuinulator, and with the lip and tongue inposition'to el'lgage. If now a key he depressed a full strolw, the parts move to the position of Fig. 2, tlureatch being depressed by one of the stop level-s so that it' relievcs the detent from the engagement of the lip and tongue, Sutil ciently to pcr'nit the detent to retract from the accumulator, thus leaving the aceumulav tor free to be turned by the ratchet 23. At

actuator rises to its normal position, and in such movement the dolly roll 46 :arried by it, engages the underside of the detent 37' and lifts it again to its position between the pins of the accumulator, the catch also resuming its original position 'under the power of its spring 47.

It will be noted from the above that when the mechanism is standing still, the numeral Wheels are always looked, and thus safeguarded against accidental movement due to jarring, shock, or change of position.

In case the stroke of the key is only a partial one, the stop' lever actuated thereby will not move so far if at all. as in full strokes, and consequently will not cause the Catch to move far enough to release the detent from the accumulator, but on the eontrary the detent will remain in its looking position in the accumulator so that the latter cannot turn. And as the Other orders in the machine are all locked at the same time by the partial Operating of the key mentioned as we shall presently see, the operator must now correct the error before proceeding with his computation. The mechanism for thus looking the other orders will be described in a later part of this Specification.

My invention contemplates the ett'ecting of two separate and novel locks upon the column actuators. The first of these aets normally, and it's main purpose is the prevention of partial strokes of the keys through the aecidental contact by the operator s finger with keys adjacent upon the right or left of the Ones intended to be struck. Such accidental pressure upon the adjacent keys will not cause even partial strokes by them, because of the construction of the keys in parts, with a non-depressible outer portion, as hereinafter explained, and because such outer portion encounters the column actuator which is normally looked by the engagement of upstanding hooks 50, with which each actuator is provided, with lateral projections 51 on the Vertical lovers 52, which are novel in this mechanism and and in so doing -releases the look between' hook 50 and projection 51, the roll moving from it's rest i'n .front of lever .32 to the' lower straight face of that lever. The other lock upon the actuator 1s one which 'is set in operation whenever parti-al or meomplete strokes are given the keys and is hest .shown at'Figs. 1, 2, 2 and 20. The mechanism ein-- the Canceling segment lever 95 Which is pivoted at ,96 and has formed on its front end the seglnent gear 07 meshing With the pinion 98 on the same shaft Which snpports the intermediate gears 21 of the numeral Wheel mechanism. SW ung on arms from the rock shaft 91 are dolly 'rolls 99 engaging the open cam slot 100 in he free ends of the cam arms 101, pivoted'nt 102 and said dolly rolls also engage the rear ends 103 of the stop controlling elboW. lovers 104 pivoted at 102 and Whose loWerand forward ends are in engagemcnt With connections 106 fiXed to the canceling lever rock bar 107, supporting a series of-upright hook stop levers 105 one for each denomination, that are swung for- Ward loy the rocking of said bar 107 to stop the pins 108 On the pinons 109. The operation of the canceling lever rocks the levers 104 on their pivot and Causes thereby the rocking of the bar 107 s'o that the lovers 105 stop the pinions 109, all as described in Patent No. 960528 to me of June 7, 1910.

'Said elbOW levers 104 also carry upwardly extending arms 110 as seen in Fig. 16 and these arms extend over and res upon the cross .rod 81 already mentioned, and When levers 104 are rooked they depress said rod and cause the release of the column actuators in the same manner as the depressing of key 80 aocomplishes that result.

The detents 87 are held in looking position relative to .the accumulator Wheels When partial strokes of the keys occur, by the catches 42 Which are prevented from moving out of the Way of the detents by the pins 120 in the swinging hook stop levers 105 as will he noticed from Fig. 2.

lt will be note l that the keys shown arelike those described in my Patents 982410 and 982417 that is to say: they are each made in two parts both adapted to he dcpressed hy the fingor When actuating the key the central part 111 being movable With respect to the other and it's actuation being necessary to the operation of the key, and the other part being side Wings 112 which are incapable of yielding dmvnward, because the tube 113 With Which each key is provided and Which contains the lifting spring 114 for lifting the buttons 115 after each operation wili then be arrested hy the column actnator by* reason of the normal locking of the actnator due to the engagenient ol' hook tlwith the side in-ojection 51. on lever 52.

I claim '1. ln a multiple oifiler key driven calculating machine, .the co::.iinati n with the nnlneral Wheels, and keys 'for actuating said Wheels, of means i'or normally looking the Wheels, such m ans being released only at the end of complete downstrokes ol' the keys and during the ensuing npstr-n-es thereof.

:2. In a multiple order key driven calculatingmachine, the combination With p the numeral Wheels, the keys for actuating said Wheels, and the train of mechanism Carrying n' otion from the keys to the Wheels, of'

being releasable only at the end of complete down strokes and remaining released during the ensuing upstrokes.

4. In a multiple order keyboard Operating calculating machine, the combination With a numeral Wheel, the series of keys actuating the Wheel, and the mechanism for carrying motion from the keys to the Wheel, of means for looking the Wheel during down strokes of the keys such means being releas'able only at the'end of complete down strokes of the keys and remaining released during the ensuing upstrokes.

5. ln a calculating machine, the combina tion With the numeral Wheels, and keys for actuating said Wheels, of means for looking the Wheels, such means retaining their normally looking action on the Wheels in case of partial strokes upon the keys and until full strokes are given the same keys.

6. In a Calculating machine the combination With the numeral Wheels, the keys for actuating said Wheels, and the train of mechanism Carrying motion from the keys to the Wheels, of means for looking said mechanism and said Wheels normally, such .means retaining their looking action On said meehanism and Wheels in case the the Wheel during down strokes of the keys, such means.

strokes given the keys are Only partial or incomplete and until full strokes .are given the same keys.

7. l he combination in a calculating machine, of adding mechanism embracing a uumeral Wheel in each order, a key driven actnator for each Wheel, a separate mechanism con'nminicating motion from each actnator to the' respective Wheels, and a' separate deteut normally looking each of said connnnnicating mechanisms, such detents releasing their looking action upon the completion of each down stroke given the actuators, and retaining such action in case the strokes of the a Ctuators are ineomplete.

8. ln a calcnlating machine, in combination, adding mechanisms :for each orcler emhraccd in the machine, a plurality of keys actnating said adding mechanisms and determining hy their manipulation the amonnts to be added, and locking detents one for each order, normally looking the adding mechanisms, such .detents releasing key driven calculating machine, of keys made in two parts movable With respect to each other and both adapted to be depressed by the fingcr at the same time, and normail looked column aetuators acting to prevent the depressing of one of the parts independently.

25. The combination in a multiple Order key driven calculating machine, of keys each having a central button and outer portions movable With respect to each other, 'and both depressiblc by the finger in Operating the key, and a column aetua 0'.'.,nadapted to arrest said outer portions and prevent their being depressed indep'endently'of the central button.

26. The combination in a multiple order calculatin'g machine of keys the operation of .which dctermines the amounts added, column aciuators driven by said keys, means j for normally loeking said actuators, and means for looking said actuators after partial strokes have been given the keys.

v 27. The combination in a multiple Order caleulating machine of keys the operation of which determines the amounts added, column actuators driven by said keys, means whereby said actuators are normally looked, but become released When a key in the same 'order therewith is struclx and means Whereby the actuators become looked When incomplete or paitial strokes are imparted to the keys.

28. In a multiple order, key driven Cal culatmg machine, the combination With the keys and the column actuators, of tWO -mechanisms for looking the actuators, One

efleetinga normal locking, and the Other 'looking the aetuators When any key is Only partially operat'ed.

29. In amultiple order key driven calcnlating machine,'the combination With the keys and the column actuators, of tWo'separate mechanisms tor looking the actuators, one mechanism acting normally, and the other coming into action after the first is released upon the making of incomplete strokes by-the keys.

30. In a multipleorder key-driven Calculating machine, the combination With the numeral Wheels and keys for actuating said Wheels, of means for normally looking the Wheels, such means being released only to 'allowproper adding movements by the Wheels.

'31. In a multiple-order key-driven calcu-' lating machine, in combination, adding mechanism including numer'l Wheels and Carrying dcvices adapted to permit said adding mechanism to receive prime actuations in plurality of orders simultaneously, keys for' aetuating said Wheels, and means for normally looking the numeral Wheels 'and adapted to release them only to alloW proper movement of the Wheels in adding.

82.' In a multiple-order key-driven calculating machine, in combination, adding 'mechanism including numeral heels and crly add.

In a multiple-order key-driven calcu-' lating machine, in combination, adding mechamsm mcludlng numeral Wheels and carr'in devices ada ted to ermit said adding mechanism to receive prime actuations m a plurahty. of orders slmultaneously,

,keys for actuating said Wheels, and means for normally looking the numeral Wheels, such means being released only at the end of complete downstrokes of the keys and during the ensuing upstrokes:

34. In a multiple-order ke-drivencalcu .lating machine, in combination, adding mechanism including numeral Wheels and Carrying devices adapted to permit said .adding mechanism to receive prime actuations in a plurality of orders. simultaneously, keys for actuating said Wheels, and 'means for normally lookingthe numeral Wheels, such means being releasable Only at. the end of complete downstrokes of the keys and remaining released during the ensuing upstrokes thereof. v

In a multiple-order key-driven calculating machine, in combination; adding mechanism, including column actuators; and. a looking mechanism adapted to look other orders of the keys when a key of one order receives only a partial key-stroke, said looking mechanisin including a trip-device auxiliary to the column actuator and having a movement independent of said column actuator. L l

36. Tn a multiple-Order key-dri'ven calculating machine, in combination; adding mechanism, including column 'actuators and Carrying devicos adapled to pex-mit. said adding-mechanism to 1m'-ei\'e prime actuations in a plura ity of orders simultaiT- ously; and a looking im-ehanism a'dapted to lock other orders *ot' the keys when a key of one order receives only a partial kcy-stroke, said looking mechanism including a tripdevice auxiliary to the column actuator and having a movement independent of said column actuator.

DORR F. FELT. VVitnesses:

G; S. BOELENSEN, ,J. C. NnviNn. 

